As most people I have to say Season 1, despite Dark Kingdom arc has a special place in my heart. For all the change TOEI have made everything beyond episode 5 was for the worse, opening new plot holes, instead of fixing them, making silly plot points even less silly. The generals subplot was the worst handling I have seen in anime so far. They should have left them die gloriously, which would have made the senshi feel way more powerful, instead of sacrifice air time for just them showing announcing their names and saying "See you next time, Sailor soldier. Nothing made as angry as the way Beryl was killed. What was the point of making Minako taking the sword from the stone if you later decided to rob her of a moment you have actually building up for. And yes, the suicide attempt... They could have kept it easily, without making Usagi so weak. This was the manga fault, I know, but there was so much building to Usagi changing into the princess - the growing hair, the existential crisis, they could have taking a nod to the PGSM and use this build up and tie it neatly making Usagi being possessed of Serenity to do it. With all the "I won't repeat the princess destiny" she sure did, and if altered that way they could have added drama, some depth, not making Usagi's character suffer, while showing she is indeed different than her past incarnation. It could have made the reunion moment between Endymion and Serenity, when Mamoru kissed Usagi, implaying the princess's spirit will finally rest in peace.